xₙ₊₁ = sin(a·yₙ) − cos(b·xₙ) yₙ₊₁ = sin(c·xₙ) − cos(d·yₙ)
The Peter de Jong attractor is a 2D strange attractor defined by a pair of trigonometric difference equations. Despite being deterministic, trajectories fill intricate structures that vary dramatically with parameters. The density of points reveals the attractor's probability measure — high-density regions appear as bright filaments.